nromanel/ESPixelPOPsAttempted re-creation of ESPixel Pops based on the original materials.
ESPixelPOPs is an open-source printed circuit board by nromanel, from the nromanel/ESPixelPOPs repository on GitHub. It is a 2-layer board of 45.7 × 25.4 mm with 14 parts on 10 nets, routed with 71 tracks and 6 vias.
It is built around the ESP-01, 78L05 and LD1117V33. Its parts include 3 ICs, 2 capacitors, 2 resistors, 1 diode and 1 transistor. It belongs with the ESP8266 boards of this library.
This is an attempted re-creation based on the original materials. It is not the author's released board file.
A one-output Wi-Fi pixel controller for an ESP-01 module. The circuit is the Ukewarrior ESPixel Pops rev D schematic of 19 July 2017. The board is 1.80 by 1.00 inch, so the 1.00 inch side slides into 1 inch schedule-40 PVC.
Every part on the board is through-hole. Open ESPixelPOPs.kicad_pcb in KiCad
8 and run Edit, Fill All Zones before ordering. GND is already traced on the
back; the zone is the pour.
J1 is the 5-position 3.81 mm terminal, wire entries facing off the left edge.
| Pin | Silk | Connect |
|---|---|---|
| 1 | VCC | supply positive |
| 2 | GND | supply negative |
| 3 | GND | pixel ground |
| 4 | DATA | pixel data |
| 5 | VCC | pixel positive |
JP1 reads GND, CTS, VCC, RX, TX, DTR from left to right. For programming, connect adapter ground to GND, adapter TXD to RX, and adapter RXD to TX. Leave the other three pins open. VCC on this header is the pixel supply, not 3.3 V. Power the board from J1. The adapter cannot run the ESP-01.
The ESP-01 plugs into U2 with the antenna hanging off the right edge. D1, the 1N4148, has its band toward the header. That diode is the serial level shifter, so a 3.3 V or a 5 V adapter can program the module.
U1 is an LD1117V33. Its metal tab is the 3.3 V output and faces the terminal. Do not let the tab touch the terminal screws.
| Pixels | IC1 | Silk jumper |
|---|---|---|
| 5 V | leave it empty | solder a wire between pads 1 and 3 |
| 12 V | fit the 78L05, flat side toward R1 and R2 | no jumper |
Pad 1 is the square pad. On a 12 V build the 78L05 only feeds the pixel-data pullup. The pixels themselves still get the full 12 V from J1 pin 5. A board built one way does not drive the other kind of pixel.
Q1 is the 2N7000 data buffer. The flat faces the terminal. The top pad is the source, the bottom pad is the drain, and the middle pin is the gate. GPIO2 drives the pixels. Hold S1 while powering the board to enter the serial bootloader.
ESPixelStick 3.2 is the last release that fits an ESP-01. Pixel output is GPIO2. Later ESPixelStick releases need a module with 4 MB of flash.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | MountingHole:MountingHole_3.2mm | , | |
| 2 | 330 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm | R1, R2 |
| 1 | 100n | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.54mm | C1 |
| 1 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Vertical | D1 |
| 1 | 220uF | Capacitor_THT:CP_Radial_D5.0mm_P2.54mm | C2 |
| 1 | 2N7000 | Package_TO_SOT_THT:TO-92_Inline | Q1 |
| 1 | 78L05 | Package_TO_SOT_THT:TO-92_Inline | IC1 |
| 1 | ESP-01 | Connector:PinSocket_2x04_P2.54mm_Vertical | U2 |
| 1 | LD1117V33 | Package_TO_SOT_THT:TO-220-3_Vertical | U1 |
| 1 | SERIAL_1x06 | Connector:PinHeader_1x06_P2.54mm_Vertical | JP1 |
| 1 | SW_PUSH | Button_Switch_THT:SW_PUSH_6mm | S1 |
| 1 | TERM_5_3.81 | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0_1x05_P3.81mm | J1 |
It measures 45.7 × 25.4 mm and has 2 copper layers, 1.6 mm thick.
14 parts, built around the ESP-01, 78L05 and LD1117V33. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the nromanel/ESPixelPOPs repository on GitHub, at the commit this page was made from: the board is ESPixelPOPs.kicad_pcb and its schematic ESPixelPOPs.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask nromanel before reusing the design.
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