LED projects:
Lamp tests
µ-controlled
SEPIC
ISP isolators
SMT boards
Expedition logs:
1973, 1974, 1975, 1976, 1977, 1979, 1982, 1983, 1985, 1986, 1987, 1988, 1989, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
Translation:
Speleogroup is a small caving club, formed by a caving team in 1969. On this site are details of some of our projects, summaries or transcriptions of our caving expedition logs, and a translation of El Mazuco (La defensa imposible).
Click here for our latest (2012) expedition log.
LED caving light projects
| Project | Description |
|---|---|
| Lamp tests | Live (in-cave) lamp tests of Luxeon Star LED lamps |
| ATtiny-A | Luxeon Star LED caving lamp based on the Atmel ATtiny15L AVR microcontroller |
| LT1512-A | Luxeon Star LED caving lamp based on the LT1512 SEPIC (buck/boost) battery charger IC |
| ISPisolaters | ISP Isolators for Atmel AVR microcontrollers |
| SMT boards | How to make SMT boards at home (pictorial) |
Expeditions
Members of Speleogroup have participated in the following expeditions to Northern Spain. See also our speleological sites list, and our notes on the mapping coordinate systems used.
| Year | Primary destination(s) | with/notes |
|---|---|---|
| 1973, August–September ✗ | La Hermida Gorge | 
BUSS » & OUCC »
|
| 1974–1975, New Year | Rales and Llanes |
|
| 1975, July–August | Rales system, Pozo del Infierno, Los Lagos, Forcau, La Hermida |
SCAL, Montpellier
|
| 1976, July | Vega El Forcau
(Forcau ’76) |
OUCC (Proceedings 8 »,
or text version »)
|
| 1977, April ✗ | Reconnaissance, Garma Ciega and Ribadesella | Quad-C, CCCC |
| 1977, July ✗ | Garma Ciega | OUCC, MUSS, PCG |
| 1979, July | Los Lagos, Toyu, Ramales |
OUCC
|
| 1982, July | La Franca, Suarias, Latarma & Toyu survey |
IBMCC
|
| 1983, July–August | La Franca & Llanes », El Cuevón de Pruneda (Purón) |
|
| 1985, August | La Franca, Pruneda, Los Lagos, Fuentica, La Hermida & Bejes |
OUCC, Rales cavers
|
| 1986, August | Pruneda, Pozo del Infierno, Cueva Negra, Rafa’s group, Toyu |
Rafa & ‘The Wild 13’
|
| 1987, July | Rales, El Mazuco, Tinganón | Rafa & Spanish group |
| 1988, August | via France; Cabañuca, La Boriza, Rioja | |
| 1989, July | Llanes area, Mestas, Socueva, La Borbolla | Angel; Speleogroup’s 20th Anniversary |
| 2000, July | Fuente Dé, Tinganón, Fuentica |
|
| 2001, July | Cubilla, El Mazuco, Orandi, Viango, Pozo del Infierno |
|
| 2002, June | El Mazuco, Pruneda, hikes, General Strike, Cabañuca |
|
| 2003, July | Andinas, Bulnes, Trumbio, Viango, Cueva Negra, high Picos |
|
| 2004, June | Bulnes, Cueva Bolado, Green Sink |
|
| 2005, July–August | Rales, Peña Blanca, Espinosa, Ramales, Durango |
Rales cavers
|
| 2006, June–July | Gesaltza, Viango, Forcau, Devoyu, Ramales, Balzola |
|
| 2007, June | High Picos, Devoyu, Caín, Rales, Sotres |
|
| 2008, June–July | Tinganón, Bulnes, Suarias, high Sierra towards Turbina |
|
| 2009, June–July | Tayada, Peruyal, Cofría, Valmayor, Negra |
Speleogroup’s 40th Anniversary
|
| 2010, July | Cudillero, Bufones×2, Tresviso, Río Purón, Cofría, Cueva El Arco |
|
| 2011, May | Aliva, Cofría, Avín, Tenis, Dobros, Forcau, Llonín, Caín. |
|
| 2012, June | Potes, Nansa & Saja valleys, Gulpiyuri, Andara mines. |
|
|
| Illustrated page (all photographs are contemporary with the log in which they appear). |
| ✗ | Log is a summary; transcription not yet available. All other logs are complete. The text in the transcriptions was originally written in the field by Bill Collis and/or Mike Cowlishaw, except where noted. |
Speleogroup members have also participated in the following explorations:
| Year | Primary destination | with |
|---|---|---|
| 1968– | UK | BEC », BUSS, IBMCC, MCS », OUCC », SWCC » |
| 1974, Summer | Co. Fermanagh | BUSS |
| 1978/9 | Mexico | IBMCC |
| 1980/1 | USA, New York based | Yorktown High » |
| 1982, April | Co. Clare | IBMCC |
| 1983, April | Co. Clare | IBMCC, KCC |
| 1986– | Italy | |
| 2003, October | Hawai’i Big Island » Lava tube caves |
Translation
| Project | Description |
|---|---|
| The Battle of El Mazuco | A translation of El Mazuco (La defensa imposible) by Juan Antonio de Blas, in La guerra civil en Asturias, Tomo 2, 1986. |