Receiver
About the Receiver PCB
Receiver is an open source ESP32 PCB design by VectorSpaceHQ, published on GitHub. It is a 4-layer board measuring 41 × 41 mm, with 20 components from 14 distinct parts.
Its main chip is the XIAO ESP32C3, from the ESP32 family. Other key parts include the RZ7886. By type, the board carries 4 resistors, 3 ICs, 3 LEDs, 2 capacitors and 1 inductor.
It belongs with the robotics & motion designs in this gallery.
From the project
A combat robot RC system using the ESP32.
ESP32C3 pin limitations: https://wiki.seeedstudio.com/exp32c3d9d6_d8/
Use D9 only as input Use D6 only as output but it will sometimes be HIGH, so don't use it for any motors!
Main components on the Receiver
Receiver bill of materials (BOM)
20 components, 14 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | RZ7886 | DIP-8_W7.62mm | U1, U2 |
| 1 | XIAO ESP32C3 | xiao_esp32c3 | U3 |
| 2 | Conn_01x02_Female | battery_pads | Batt1, ESC_PWR1 |
| 1 | ESC | PinSocket_1x03_P2.54mm_Vertical | ESC_logic1 |
| 1 | Conn_01x02_Female | DC_motor_output | ML1 |
| 1 | motor_output | DC_motor_output | MR1 |
| 1 | UA78M33CDCYRG3 | SOT230P700X180-4N | PS1 |
| 1 | Servo | PinSocket_1x03_P2.54mm_Vertical | Servo1 |
| 3 | LED | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | Comms1, Comms2, PWR1 |
| 1 | L7806 | TO-263-2_TabPin1 | L7806 |
| 1 | .1 uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3 |
| 1 | 470 uF | CP_Radial_D8.0mm_P3.80mm | C4 |
| 1 | 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 3 | 680 ohm | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R3, R4 |
Receiver design files
The KiCad project lives in the VectorSpaceHQ/VS_combat_robot repository on GitHub; these links point at the commit this page was built from.
Receiver: common questions
What microcontroller does the Receiver use?
The Receiver is built around the XIAO ESP32C3, from the ESP32 family.
How big is the Receiver PCB?
The Receiver measures 41 × 41 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Receiver?
20 components, from 14 distinct parts. The full bill of materials is listed on this page.
Where can I download the Receiver design files?
From the VectorSpaceHQ/VS_combat_robot repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Receiver design in my own project?
The repository has no license, so all rights stay with VectorSpaceHQ. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Receiver 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.
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