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Esp prog

mschwingen·hardware·esp-prog/SMD/esp-prog.kicad_pcb

Esp prog PCB layout, top view — open source board by mschwingen

About the Esp prog PCB

Esp prog is an open source PCB design by mschwingen, published on GitHub. It is a 2-layer board measuring 30 × 19 mm, with 8 components from 6 distinct parts.

By type, the board carries 4 resistors, 2 transistors and 2 connectors.

It belongs with the usb & debug tools designs in this gallery.

From the project

Hardware designs by Michael Schwingen, michael at schwingen dot org

This small PCB is an add-on for a standard CP2102 USB-to-serial dongle that adds the reset/programming circuit required to upload new firmware without manual interaction so that the target board needs no extra parts except for the programming connector. Since there does not seem to be a standard programming connector pinout, I decided to use a 2*3 pin connector, with VCC/GND/Reset on the same positions as on an AVR ISP connector. There are THT and SMD versions - THT was basically used to document the wired prototype.

Esp prog, from the project README
From the project README

Esp prog bill of materials (BOM)

8 components, 6 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
2N7002
BCW33
Q1
1
BCW33
Q2
1
CONN_01X16
Conn_01x07_Female
J1
1
CONN_01X12
Conn_02x03_Odd_Even
J2
2
8.2k
R1, R2
2
390
R3, R4

Esp prog design files

The KiCad project lives in the mschwingen/hardware repository on GitHub; these links point at the commit this page was built from.

Esp prog: common questions

How big is the Esp prog PCB?

The Esp prog measures 30 × 19 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Esp prog?

8 components, from 6 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 Esp prog design files?

From the mschwingen/hardware repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Esp prog design in my own project?

The repository has no license, so all rights stay with mschwingen. Use it as a reference, and ask the author before reusing the design.

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