Controller
About the Controller PCB
Controller is an open source ESP32 PCB design by dwanpo, published on GitHub. It is a 2-layer board measuring 100 × 53.9 mm, with 37 components from 30 distinct parts.
Its main chip is the ESP32-C3-WROOM-02-N4, from the ESP32 family. Other key parts include the TPS54331 and ESP8684-WROOM-02UC. By type, the board carries 8 capacitors, 8 resistors, 6 switches, 5 diodes, 3 ICs and 3 transistors.
Main components on the Controller
Controller bill of materials (BOM)
37 components, 30 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPS54331 TP4059 | SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BR | U1 |
| 1 | ESP8684-WROOM-02UC XC6220B331MR | SOT-23-5 | U3 |
| 1 | ESP32-C3-WROOM-02-N4 | ESP32-C3-WROOM-02 | U4 |
| 1 | AO3401 | SOT-23 | Q1 |
| 2 | AllPower__AP2300 | SOT-23 | Q2, Q3 |
| 1 | USB_C_RECEPTACLE_POWERONLY_6P USB_C_Receptacle_PowerOnly_6P | USB-C-SMD_HX-TYPE-C-6PIN | J1 |
| 1 | CONN_01X04 Bat | CONN-SMD_2P-P2.54-XH2.54-WT | J2 |
| 1 | Conn_01x06 | CONN-SMD_6P-P1.00_XYECONN_XY-SH1.0-6A61 | J3 |
| 1 | MLT-5020_COPY | BUZ-SMD_L5.0-W5.5-P4.60 | BUZZER2 |
| 2 | TS-1199A-B-B | SW-SMD_L6.0-W6.0-P6.00-LS6.6 | SW1, SW5 |
| 2 | RKJXV1224005 | SW-TH_RKJXV1224005 | SW2, SW3 |
| 2 | TC-1102N-C-AS-B | SW-TH_TC-1102N-C-AS-B | SW4, SW7 |
| 1 | RED | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D1 |
| 1 | BLUE | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D2 |
| 1 | WS2812B | LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D3 |
| 1 | BAT54C | SOT-23 | D4 |
| 1 | 1N4148W GREEN | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D5 |
| 2 | 22U 100n | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C3 |
| 1 | 22U 10u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2 |
| 1 | 22U 1u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C4 |
Show 10 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 100N 10u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5 |
| 2 | 1u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C7, C9 |
| 1 | 100n | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C11 |
| 1 | 0.5R 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1 |
| 1 | 5K1 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2 |
| 1 | 100R 1k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3 |
| 1 | 10K 1.5k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4 |
| 1 | 29.4K 33k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R8 |
| 2 | 33k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R9, R11 |
| 1 | 3k6 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R10 |
Controller design files
The KiCad project lives in the dwanpo/balancer repository on GitHub; these links point at the commit this page was built from.
Controller: common questions
What microcontroller does the Controller use?
The Controller is built around the ESP32-C3-WROOM-02-N4, from the ESP32 family.
How big is the Controller PCB?
The Controller measures 100 × 53.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Controller?
37 components, from 30 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 Controller design files?
From the dwanpo/balancer 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 Controller design in my own project?
The repository has no license, so all rights stay with dwanpo. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Controller without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
More boards in balancer
Similar boards
ESP32Open Book Abridged Edition
joeycastillo
85 × 115 mm65 parts2LCC-BY-SA-4.08.1k
ESP32Badge
atopile
56.3 × 39 mm239 parts4LMIT4.0k
ESP32Esp32 minimal
36.2 × 26.8 mm20 parts2LMIT4.0k
ESP32Racer
StuckAtPrototype
36 × 50.2 mm70 parts4LApache-2.03.8k
ESP32Controller
29 × 74 mm58 parts4LApache-2.03.8k
ESP32Bitaxe
skot
56.5 × 99.8 mm86 parts4LCERN-OHL-S-2.01.4k