ESPTiny402-SOT89-shove
About the ESPTiny402-SOT89-shove PCB
ESPTiny402-SOT89-shove is an open source ESP8266 PCB design by tomtor, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 26.4 × 23.9 mm, with 15 components from 11 distinct parts.
Its main chip is the ESP-01v090, from the ESP8266 family. Other key parts include the ATtiny402-SS and MCP1700. By type, the board carries 5 resistors, 3 ICs, 3 connectors, 2 diodes and 2 capacitors.
It belongs with the power & battery designs in this gallery.
From the project
KiCad ATtiny84/x14/x02 (SMD) and ESP-01 (ESP 8266) PCB boards
The main function of the ATtiny is acting as a battery friendly low power co-processor for the ESP. A bit like the ULP low power co-processor of the ESP32, except with a lot more IO functions and program memory.
ATtiny and ESP combined use 22uA in sleep mode or even less when the ESP is switched off by the ATtiny with CS.
Usable on breadboard (ATtiny84: 9 rows high, leaves 2 rows empty and ATtiny16x4: 8 rows high) OR stand alone.
Main components on the ESPTiny402-SOT89-shove
ESPTiny402-SOT89-shove bill of materials (BOM)
15 components, 11 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESP-01v090 | ESP-01 | U1 |
| 1 | ATtiny402-SS | SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | MCP1700 | SOT-89-3 | U3 |
| 2 | Conn_01x10_Male | PinHeader_1x10_P2.54mm_Vertical | J1, J2 |
| 1 | Conn_01x04_Male | PinHeader_1x04_P2.54mm_Vertical | J3 |
| 1 | LED | LED_1206_3216Metric | D1 |
| 1 | BAT54S | SOT-23 | D2 |
| 2 | 1u | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1, C2 |
| 1 | 220 | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1 |
| 2 | 1M | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R2, R3 |
| 2 | 4k7 | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R4, R5 |
ESPTiny402-SOT89-shove design files
The KiCad project lives in the tomtor/ESPTiny repository on GitHub; these links point at the commit this page was built from.
ESPTiny402-SOT89-shove: common questions
What microcontroller does the ESPTiny402-SOT89-shove use?
The ESPTiny402-SOT89-shove is built around the ESP-01v090, from the ESP8266 family.
How big is the ESPTiny402-SOT89-shove PCB?
The ESPTiny402-SOT89-shove measures 26.4 × 23.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the ESPTiny402-SOT89-shove?
15 components, from 11 distinct parts. The full bill of materials is listed on this page.
Where can I download the ESPTiny402-SOT89-shove design files?
From the tomtor/ESPTiny repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the ESPTiny402-SOT89-shove design in my own project?
Yes, under the terms of its GPL-3.0 license, which tomtor chose for the repository.
Can I test firmware for the ESPTiny402-SOT89-shove without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP8266 firmware against it before you order a PCB.
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