Esc
About the Esc PCB
Esc is an open source STM32 PCB design by iamdarshg, published on GitHub. It is a 4-layer board measuring 246 × 296 mm, with 599 components from 60 distinct parts.
Its main chip is the STM32G431CBT6, from the STM32 family. Other key parts include the LM5164DDAR, AP2112K-3.3TRG1, DRV8353SRTAR, ISO6731FDWR and TPS70933DBVR. By type, the board carries 239 capacitors, 225 resistors, 39 ICs, 36 transistors, 20 connectors and 13 diodes.
It belongs with the robotics & motion and power & battery designs in this gallery.
From the project
Reworked cheaper, maybe faster but less redundant drone controller.
This is a codebase that is woring to create a hardware+software solution for dron control and management in a relatively modular manner. This is a codebase that is woring to create a hardware+software solution for dron control and management in a relatively modular manner. This needs to be inherenly zero-trust, zero-fail and easy to analyse statically. The langauge of choice is C, with rust and python tooling accepted as well.Follow the 10 rules as set by nasa for code, the same should apply here due to the similar no-fail environment. Currently, the main control board has been designed and…
Main components on the Esc
Esc bill of materials (BOM)
599 components, 60 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | LM5164DDAR LM5164DDA Texas Instruments | HSOP-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.1mm_ThermalVias | U701, U703 |
| 1 | AP2112K-3.3TRG1 Diodes Inc. | SOT-23-5 | U702 |
| 6 | DRV8353SRTAR Texas Instruments | WQFN-40-EP_6x6_P0.5 | U1101, U1201, U1301, U1401, U1501, U1601 |
| 6 | STM32G431CBT6 STMicroelectronics | LQFP-48_7x7mm_P0.5mm | U1102, U1202, U1302, U1402, U1502, U1602 |
| 6 | ISO6731FDWR Texas Instruments | SOIC-16W_7.5x10.3mm_P1.27mm | U1103, U1203, U1303, U1403, U1503, U1603 |
| 6 | TPS70933DBVR Texas Instruments | SOT-23-5 | U1104, U1204, U1304, U1404, U1504, U1604 |
| 6 | INA296A2IDR Texas Instruments | SOIC-8_3.9x4.9mm_P1.27mm | U1105, U1205, U1305, U1405, U1505, U1605 |
| 6 | SN74LVC1G08DBVR Texas Instruments | SOT-23-5 | U1106, U1206, U1306, U1406, U1506, U1606 |
| 36 | IPTC014N10NM5ATMA1 IPTC014N10NM5 Infineon | PG-HDSOP-16_TOLT_IPTC | Q1101, Q1102, Q1103, Q1104, Q1105, Q1106, Q1201, Q1202 +28 |
| 6 | ABM8G-8.000MHZ-18-D2Y-T 8MHz ABM8G Abracon | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1101, Y1201, Y1301, Y1401, Y1501, Y1601 |
| 1 | 43650-0200 AUX_BATTERY Molex | Molex_Micro-Fit_3.0_43650-0200_1x02_P3.00mm_Horizontal | J701 |
| 1 | SM04B-GHS-TB FLIGHT_CAN_POWER JST | JST_GH_SM04B-GHS-TB_1x04-1MP_P1.25mm_Horizontal | J702 |
| 6 | M5_RING_LUG_PAIR FUSED_BATTERY_TAP Generic | POWER_LUG_M5_2P_P20 | J1101, J1201, J1301, J1401, J1501, J1601 |
| 6 | M5_RING_LUG_TRIPLE MOTOR_PHASES Generic | POWER_LUG_M5_3P_P20 | J1102, J1202, J1302, J1402, J1502, J1602 |
| 6 | LOCAL_SWD Commodity / unspecified | PinHeader_1x05_P1.27mm_Vertical | J1103, J1203, J1303, J1403, J1503, J1603 |
| 1 | 1206L075/24WR PTC 0.75A Littelfuse | Fuse_1206_3216Metric | F701 |
| 6 | RFM-0505S RECOM | RFM_SIP4_11.5x6_P2.54 | PS1101, PS1201, PS1301, PS1401, PS1501, PS1601 |
| 6 | NTCG163JF103FT1 TDK | R_0603_1608Metric | TH1, TH2, TH3, TH4, TH5, TH6 |
| 7 | SM8S51A Littelfuse | DO-218AB_SM8S | D701, D1101, D1201, D1301, D1401, D1501, D1601 |
| 6 | GREEN Commodity / unspecified | LED_0603_1608Metric | D1102, D1202, D1302, D1402, D1502, D1602 |
Show 40 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 6 | BLM18AG601SN1D 600R@100MHz Murata | L_0603_1608Metric | FB1101, FB1201, FB1301, FB1401, FB1501, FB1601 |
| 2 | 33u 1.8A Commodity / unspecified | L_Bourns_SRR1260 | L701, L702 |
| 3 | 2.2u 100V X7R Commodity / unspecified | C_1210_3225Metric | C700, C701, C710 |
| 44 | 10u 100V Commodity / unspecified | C_1210_3225Metric | C702, C711, C1106, C1131, C1132, C1133, C1134, C1135 +36 |
| 2 | 2.2n 50V X7R Commodity / unspecified | C_0603_1608Metric | C703, C712 |
| 4 | 22u 10V Commodity / unspecified | C_1210_3225Metric | C704, C705, C713, C714 |
| 8 | 1u Commodity / unspecified | C_0603_1608Metric | C706, C707, C1171, C1271, C1371, C1471, C1571, C1671 |
| 2 | 3.3n X7R Commodity / unspecified | C_0603_1608Metric | C708, C715 |
| 2 | 470p C0G Commodity / unspecified | C_0603_1608Metric | C709, C716 |
| 6 | 47n 100V Commodity / unspecified | C_0603_1608Metric | C1101, C1201, C1301, C1401, C1501, C1601 |
| 12 | 1u 16V Commodity / unspecified | C_0603_1608Metric | C1102, C1103, C1202, C1203, C1302, C1303, C1402, C1403 +4 |
| 6 | 1u 10V Commodity / unspecified | C_0603_1608Metric | C1104, C1204, C1304, C1404, C1504, C1604 |
| 6 | 100n 100V Commodity / unspecified | C_0603_1608Metric | C1105, C1205, C1305, C1405, C1505, C1605 |
| 6 | 100n 10V Commodity / unspecified | C_0603_1608Metric | C1107, C1207, C1307, C1407, C1507, C1607 |
| 24 | 10n C0G Commodity / unspecified | C_0603_1608Metric | C1120, C1121, C1122, C1123, C1220, C1221, C1222, C1223 +16 |
| 6 | 100PX820MEFC18X35.5 820u 100V Rubycon | CP_Radial_D18.0mm_P7.50mm | C1130, C1230, C1330, C1430, C1530, C1630 |
| 6 | 10n 50V Commodity / unspecified | C_0603_1608Metric | C1150, C1250, C1350, C1450, C1550, C1650 |
| 6 | 10u 10V Commodity / unspecified | C_0805_2012Metric | C1160, C1260, C1360, C1460, C1560, C1660 |
| 36 | 100N 100n Commodity / unspecified | C_0603_1608Metric | C1161, C1164, C1165, C1175, C1176, C1177, C1261, C1264 +28 |
| 12 | 2.2u 10V Commodity / unspecified | C_0603_1608Metric | C1162, C1163, C1262, C1263, C1362, C1363, C1462, C1463 +4 |
| 6 | 4.7U 4.7u Commodity / unspecified | C_0603_1608Metric | C1166, C1266, C1366, C1466, C1566, C1666 |
| 30 | 100N 100n Commodity / unspecified | C_0402_1005Metric | C1167, C1168, C1169, C1170, C1172, C1267, C1268, C1269 +22 |
| 12 | 12p C0G Commodity / unspecified | C_0402_1005Metric | C1173, C1174, C1273, C1274, C1373, C1374, C1473, C1474 +4 |
| 2 | 41.2k 1% Commodity / unspecified | R_0603_1608Metric | R701, R710 |
| 2 | 45.3k 1% Commodity / unspecified | R_0603_1608Metric | R702, R711 |
| 2 | 14.3k 1% Commodity / unspecified | R_0603_1608Metric | R703, R712 |
| 1 | 0 STAR Commodity / unspecified | R_1206_3216Metric | R704 |
| 2 | 226k 1% Commodity / unspecified | R_0603_1608Metric | R705, R713 |
| 36 | 2.2 Commodity / unspecified | R_0603_1608Metric | R1101, R1103, R1105, R1107, R1109, R1111, R1201, R1203 +28 |
| 60 | 100K 100k Commodity / unspecified | R_0603_1608Metric | R1102, R1104, R1106, R1108, R1110, R1112, R1150, R1151 +52 |
| 24 | CSS4J-4026R-L500F 0.5m 1% 5W Bourns | CSS4J-4026_Kelvin | R1120, R1121, R1122, R1123, R1220, R1221, R1222, R1223 +16 |
| 24 | 47 Commodity / unspecified | R_0603_1608Metric | R1130, R1131, R1132, R1133, R1230, R1231, R1232, R1233 +16 |
| 24 | 150k 0.1% Commodity / unspecified | R_1206_3216Metric | R1140, R1141, R1142, R1143, R1240, R1241, R1242, R1243 +16 |
| 6 | 33k 0.1% Commodity / unspecified | R_0603_1608Metric | R1144, R1244, R1344, R1444, R1544, R1644 |
| 6 | 10k 0.1% Commodity / unspecified | R_0603_1608Metric | R1145, R1245, R1345, R1445, R1545, R1645 |
| 12 | 10K 10k Commodity / unspecified | R_0603_1608Metric | R1153, R1156, R1253, R1256, R1353, R1356, R1453, R1456 +4 |
| 6 | 4.7K 4.7k Commodity / unspecified | R_0603_1608Metric | R1155, R1255, R1355, R1455, R1555, R1655 |
| 6 | 1k Commodity / unspecified | R_0603_1608Metric | R1157, R1257, R1357, R1457, R1557, R1657 |
| 6 | 100k | R_0603_1608Metric | R1158, R1258, R1358, R1458, R1558, R1658 |
| 6 | 68k | R_0603_1608Metric | R1159, R1259, R1359, R1459, R1559, R1659 |
Esc design files
The KiCad project lives in the iamdarshg/drone-arm repository on GitHub; these links point at the commit this page was built from.
Esc: common questions
What microcontroller does the Esc use?
The Esc is built around the STM32G431CBT6, from the STM32 family.
How big is the Esc PCB?
The Esc measures 246 × 296 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Esc?
599 components, from 60 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Esc design files?
From the iamdarshg/drone-arm repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Esc design in my own project?
The repository has no license, so all rights stay with iamdarshg. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Esc without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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