See inside every ESP8266 still in the field.

For the ESP8266 boards still in the field: the device's web server from anywhere, logs, metrics and the reset reason, and OTA updates, in about 7 KB of RAM, without a TLS library.

Adding it

pinscope_start(NULL);   /* the key is in menuconfig */

What you get

• Its web server from anywhere: an HTTPS address for the HTTP server already on the device, behind your login, a share link or an API token. No port forwarding, no VPN.
• Logs: live and stored, searchable, from the device's normal log output.
• Health: memory, stack, signal, uptime and restarts without code, and your own numbers with one call.
• Crashes: kept across the reboot and decoded with the ELF of the build.
• Updates: from the dashboard, with the platform's own fallback when the new firmware does not come back.
• Alerts: email or webhook when a device goes offline or crashes.

Free tools

• ESP32 serial monitor
  A serial monitor in Chrome or Edge: colored log levels, reset, filter, errors explained and ESP32 or Zephyr crashes decoded live with your ELF.
• ESP32 web flasher
  Flash ESP32 firmware from Chrome or Edge: offsets from the files or flash_args, chip checked, erase and full backup. Built on esptool-js.
• sdkconfig diff
  Compare two ESP-IDF sdkconfig files: differences grouped by component, the settings that change behaviour in the field explained, and a minimal sdkconfig.defaults.
• ESP8266 exception decoder
  Paste an ESP8266 crash, Exception (n) and the stack dump, choose the ELF, and get the function and line of every address. In your browser.

Guides

• Remote access to an ESP32 without TLS: what it measured and what it costs
  Why the Pinscope device component uses the Noise protocol instead of TLS, what it measured on an ESP32-S2, and what that choice costs.
• Pinscope now runs on Zephyr, Raspberry Pi Pico, Linux and ESP8266
  Remote access, logs, crash reports and OTA updates, as on the ESP32, now for Zephyr, the Pico 2 W, Linux and the ESP8266. About 9 KB of RAM.
• Memfault, Golioth, nRF Cloud and Pinscope compared
  Device management and observability for embedded fleets compared: Memfault, Golioth, nRF Cloud and Pinscope, by features, platforms and pricing.
• The Cyber Resilience Act, for the devices you ship
  What the EU Cyber Resilience Act asks of device makers, and when: an SBOM, handling vulnerabilities, security updates, a support period, reporting. What Pinscope does for it, and what it does not.

Other platforms: ESP32 · Zephyr · Raspberry Pi Pico · Linux